US1006362A - Shaft-coupling. - Google Patents

Description

T. C. DAWSON. SHAFT COUPLING.

IIIIIIIIIIIIIIIII 1111.23, 1911. 1,006,362. Patented 0 31 121911.

UNITED I sTAtpns PATEET oFFIoE. T

THOMAS 0. DAWSON, 0F SMITHS FERRY, PENNSYLVANIA.

Specification of letters Patent.

SHAFT-COUPLING.

, Application filed March 28, 1911. Serial No. 616,462.

To all whom it may concern:

Be it known that I, THOMAS C. DAWSON, residing at Smiths Ferry, in the county of Beaver and-State of Pennsylvania, a citizen of the United-States, have invented or dis-.

covered certain new and useful Improvements in Shaft-Couplers, of which improvements the following is a specification.

In pumping oil. from wells, the usual practice is to connect a sucker-rod, consistmg of a series of relatively short rods (joined end toend), to a walking beam or jack. In order to join the rods together, where steel sucker-rods are employed, the ends of each section are usually equipped by the manufacturer with what are termed a box and a 9 in, which are suitable metal sleeves rigidly secured to the rods;

and because the standard lengths of the rod sections seldom prove to be the exact length required to make connection to whatever pumping machinery is used, such connection is usuall made through an intermediate length 0 wood sucker-rod.

M invention relates to a coupler, particular y applicable, although not limited, to

the direct connection of a steel suckenrod' to a walking-beam, and the object ofmy inventionis to provide a practical and efficient coupler. I

In the accompanying drawing, which forms part of my specification, Figure 1 is an elevation of my improved coupler'engaging a rod, and Fig. 2 is a vertical sectional view taken on the line IIII, Fig. 1.

Like numerals are used to designate like parts.

As shown, the coupler preferably consists of a sleeve 1, suitably provided with a means of attachment, such as screw-threads, to the connecting piece 2. The upper end of the said sleeve 1 is suitably provided with a shoulder 3 to receive the upset end of a sucker-rod 4, and, to the end that the said upset rod will have no loose play, a suitable packing 5 may be inserted in the cup-shaped portion of the connecting piece 2. To secure the said connecting piece to a walking beam I preferably form a threaded extension 6 on said piece, and an angular portion 7 may also be formed on said piece to form Patented Oct. 17, 1911.

a means for engagement for a tightening wrench or elevators.

2 will preferably be of the same diameter as the screw-threaded portion of .the pin And in this construc- 1 tion the extension 6 of the connecting piece usually secured to each sucker-rod section,

to the end that the connection of the sucker-- rod to the polished rod of the walking-beam may be the same regardless of whether the last section of rod has or has not been cut.

In making an attachment'with my conpler the excessive length of the steel suckerrod is cut off and the sleeve 1 is sli ped over the extending portion, the end 0 which is then suitably upset. The said sleeve may then be raised lnto a position wherein the upset end of the rodis seated upon the shoulder 3 and the'connecting-piece may then be screwed upon the sleeve. g

It will be observed of my invention that I have provided a coupler whereb asuckerrod may be easily connected to t e polished rod of a walking-beam and wherein the full strength of the sucker-rod may be developed.

It will be observed that by providing the.

recessed shoulder or seat adpacent to the screw-threaded end of the sleeve, two advantages may be obtained. In the first place the end of the sucker-rod to be upsetis open to the free manipulation of whatever upsetting tool may be used; and in the second place when there is a pull upon the rod, its flared upset end will act as a wedge to spring t close and unyielding engagement with the' ine externallythreaded sleeve into ternally-threaded cup of the second member.

take over the head upset on such rod, and a gagement clamping said member to the sleeve, said sleeve adapted to surround such aforesaid member. 10 rod and screw-threaded externally to en- In testimony whereof I have hereunto set gage said internally-threaded cup, said my hand. 4

5 sIeeve further provided with a shoulder at THOMAS C. DAWSON.

one ehd engaging the upset head of the rod Witnesses: from beneath when applied thereto and PAUL N. CRI'roHInw,

through its aforesaid screw-threaded en- ALICE A. TRILL.

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